Resubmissions

13-04-2024 09:28

240413-lfvc7acf52 10

13-04-2024 09:28

240413-lft3esff2x 10

13-04-2024 09:28

240413-lfemqsff2t 10

13-04-2024 09:27

240413-le61lafe91 10

13-04-2024 09:27

240413-le6ptsfe9z 10

09-04-2024 08:16

240409-j555wadf8x 10

09-04-2024 08:16

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09-04-2024 08:16

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09-04-2024 08:15

240409-j52sfsad57 10

04-11-2020 01:00

201104-p65ygpgpnx 9

Analysis

  • max time kernel
    246s
  • max time network
    297s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13-04-2024 09:28

General

  • Target

    a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe

  • Size

    483KB

  • MD5

    3265b2b0afc6d2ad0bdd55af8edb9b37

  • SHA1

    24272beb676d956ec8a65b95a2615c9075fa9869

  • SHA256

    a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4

  • SHA512

    28f99da799b43a5fd060b5cab411911b54ceeb51e612ec6213c2b8003ee6de29bc46683ba04507c0e8a92e9fbec4be5cecbc8918618db9c15f231a5be806cb94

  • SSDEEP

    12288:JF+dRkCGjzKd5Ik6ZDEyyq8Me0KzYB3IvClBTn:JF+deC2+d5AZLde0KcBU4BT

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 4 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Uses Tor communications 1 TTPs

    Malware can proxy its traffic through Tor for more anonymity.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
    "C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:420
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C schtasks /Create /SC MINUTE /TN "Mouse Application" /TR "C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe" /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2288
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /Create /SC MINUTE /TN "Mouse Application" /TR "C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe" /f
        3⤵
        • Creates scheduled task(s)
        PID:4256
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C wmic SHADOWCOPY DELETE & wbadmin DELETE SYSTEMSTATEBACKUP & bcdedit.exe / set{ default } bootstatuspolicy ignoreallfailures & bcdedit.exe / set{ default } recoveryenabled No
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4328
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic SHADOWCOPY DELETE
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4784
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 420 -s 1892
      2⤵
      • Program crash
      PID:2764
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4996
  • C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
    C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
    1⤵
      PID:64
    • C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
      C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
      1⤵
        PID:652
      • C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
        C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
        1⤵
          PID:4564
        • C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
          C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
          1⤵
            PID:4324
          • C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
            C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.exe
            1⤵
              PID:824

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\a188e147ba147455ce5e3a6eb8ac1a46bdd58588de7af53d4ad542c6986491f4.log

              Filesize

              727B

              MD5

              a09ffd1537d70648e9cadf83ee4fd128

              SHA1

              7900a00e33e10f5bab8f7cb81ee86bc14ffff0fd

              SHA256

              e21bfae7982c0194ec504c4adb4b162ae9531f1f55783f9c6d70658569f8fa34

              SHA512

              0e77dd335e6525ddcce16216190c031ec1f5a90b73cf33aca05cc36e77ed97a734ec012ce99859a3d3cf83c1de9bd3b558525dc51b10b5366bd28b9facd99c12

            • \Users\Admin\AppData\Local\Temp\tor-lib.dll

              Filesize

              38KB

              MD5

              dc7e564809d6c2a2f3457c3c9b91f22b

              SHA1

              f28c63fc7ac58162c27428a179d2113200814e7e

              SHA256

              9969c1e4cf32d1fe6140d6fabf63b6b093a6c6ff7045a187b14175d46cfb74a0

              SHA512

              f37a46895062318aef808c65bd2a074c8177b6e90f9368aae1892db837f7962c4ed1d75ba34c533895f096d3d71b56aecdb6eafbf61b3ecd50b0d4e8c79021f0